orient2d

ifc_lite_geometry::kernel::predicates

Function orient2d 

Source 
pub fn orient2d(
    a: &ImplicitPoint,
    b: &ImplicitPoint,
    c: &ImplicitPoint,
    axis: DropAxis,
) -> Sign
Expand description

Exact orient2d(a, b, c) projected on the two axes remaining after dropping axis (the in-plane predicate for re-triangulation). Same cascade as orient3d; the indirect 1-implicit case shares the sign(d) flip.